Pump-valve



1. B. STANTON.

PUMP VALVE.

APPLICATION FILED FEB. 20, 1919.

1,355,285. v Patented 0ct.12,1920..

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JOSEPEI IB. STANTON, OF ST. LOUIS, MISSOURI, ASSIGNOR TO W. N. MATTHEW$ AND BROTHER, INCL, OF ST. LOUIS, MISSOURI, A GORFORATION OF NEW MEXICO.

Polar-VALVE.

Specification of Letters Patent.

Patented own, 1920.

Application filed February 20, 1919. Serial No. 278,124.

To all whom it may concern:

Be it known that I, JosnPH B. STANTON, a citizen of the United States, residing at St. Louis,v Missouri. have invented a certain new and useful Improvement in Pump- Valves, of which the following is a full, clear. and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a vertical sectional view through a pump showing my improved valve in position thereon.

Fig. 2 is a detail view of one of thevalves.

Fig. 3 is a detail view of one of the valve seats.

Fig. 4 is a detail view of a modified form of valve. 7

Fig. 5 is a detail view of a valve seat for the form of valve shown in Fig. 4.

My invention relates. to a new and useful improvement in pump valves designed particularly for the type of pump shown and described in an application filed by George McD. Johns. Serial No. 272,944. The object of my present invention is to provide a removable valve seat which, being detachable, may be ground, together with the valve, without the necessity of handling the heavy ported casting on which the valve seat is arranged and in this manner avoid warping of said valve seat due to pressing or screwing into said casting as in present practice is avoided.

In the drawings, 1 indicates the base of the pump having an inlet port 2 and an outlet port 3. 4 indicates a casting suitably ported to communicate with the inlet and outlet ports, said casting providing a mount for the cylinder 5 in which operates a plunger 6. I have not shown the means for reciprocating thisplunger, as the same forms no partof my present invention.

The casting 4, before referred to, has a top wall 4 through which open ports in said casting, as shown, and on each end ofcasting 4 and on opposite sides of the cylinder 5 are arranged valves seats 7 provided with ports 8 communicating with the ports in casting 4. The valve seat 7 has a raised boss 9 in which spider arms are arranged for supporting a guiding stud 10, on which guiding stud is a rubber valve 11 held to its seat by means of a spring 12. 13 indicates a valve cap having a centering teat 14 for spring 12, said cap engaging the marginal flanges of the valve seat 7, as shown. 15 indicates a clamping member having laterally extending arms 15 through which extend bolts 16, said bolts passing down through the base casting 1. By tightening the nuts on the bolts 16, the valve cap, valve seat and ported casting 4 are clamped to the base casting 1. The engaging surfaces of these parts are preferably machine finished, and, if desired, leather gaskets or packing strips or washers may be employed between the engaging surfaces.

Where hot liquids or chemicals are pumped which may disintegrate or aifect the rubber valves 11, I can employ metal valves 17, such as shown in Fig. 4, which metal valves cotiperate with valve seats 18. as shown in Fig. 5. Where these metal valves are employed, the spring may or may not be used, as desired. The metal valve 17 is provided with an inner stud 17 on its top which serves to arrest its upward movement by cooperating with teat 14 of the valve cap.

By making the valve seat separate and detachable, diflerent metal can be employed in its construction than that used in the base, the ported casting 4 and the valve cap, which are preferably made of cast iron. The valve seatmaybe made of brass orany other suitable material, and where liquids such as water are tobe pumped. which will not seriously affect rubber, rubber valves 11 may be used. or metal valves such as valve 17 may be employed where other liquids are to be pumped. The detachability of the valve seat and the accessibility of the valve enablesboth the seat and the valve to be ground or refinished without necessitating the handling of the ported casting 4 and without danger of possibly warning or injuring the valve seat by its being refitted to the ported casting. Furthermore, the valve seats and valves can be readily renewed at little expense, without renewing other parts of the pump or replacing of the casting thereof.

securing the same, the valve seats and opposite ends of the ported castingto the base casting. v r I r In testimony whereof I hereunto afiix my signatiire, this 18th day ofFebrua 'y, 1919.

JOSEPH B. STANTON. 

